Fluid filter



Spf..-14, v1943. G. D. MOORE 2,329,356- FLUID FILTER Filed Nov. 18, 1941 or necessary.

vline I-I of Fig.'2.'v j

Patented Sept. `VV 14, v19.43,y

.f f# vThis invention relatesigenerally to ,y improve# solutions, `in association ywith whicha filtering powder. isnemployedg:` 'w i In dry cleaning establishments` use is: made of cleaning. Isolutions which arecontinuously'run through'cl'eansing filters so. that the vsolution .may be usedyover and over again and intsuch filters y, there is employed a powdery which'adheres to one' side of astraining clothand forms a, suitjable lter bed through Whichf'thefluid is run.

n In iilters of known .construction rthe `powder is sequently whenthe 'circulation'zofixthe iluidis f resumed someofmthe `fluid-'zwillppass ythrough ,v V2,?,2a356 l N I George DlVIoore, "f5 yApfilica't"it'n`NQv mir 1s, y1941, silfNa 1,119,657" Wfafoiims. poizibfii) .ments in filtering devices fandi pertainsparticularly to` the devices ,usedfor filtering cleaning frontfwall form'sjahead whichisnetachably either unfiltered ,o'ryiri'arr` improperly iiltered condition as Athe-proper :thickness or depthofpowder deposit :does not .exist over .the entire wall of'fabricagainstwhichitis deposited.Y

The .primary object ofthe presentinventionis i to provide an-improved-ltering unit infwhch theconstruction'ris such Jthatfthe're is not only providedfa' fabric surface against which 'the' ltering powder is deposited'which `is'fdis'posed;in such manner; as to cause thepowder'to inaintainits v'condition thereon even though the-fiuid flowmay be ydiscontinued but lwhich is constructedv in such y( Another object "of r`the invention'gis to,l provide a ltering device in whichithefiltering unit is disposed'in a novel manner withinahousing to not i only provide afmaximum filte-rsu'rfacef` or area f inr a small housing but inamanner'- tojfacilitate its easy removal and replacement when desired Thefinvention willb'e. best understood from a,

y consideration of the following detailed description taken in connection with the accompanying drawing; it lbeing understood, however, that the preferred embodiment of the invention.

In the drawing:y f

tion, the section being taken substantially 4on' the `invention isnot to be considered aslimited by'l the specific illustration or description butthat such illustration and description constituteav A' is a transverse; section'ftaken `onvtlieiline i I ,a-aofFigap Referring now "more as ofgelongated rectangular; designV and; assumingahorizontal position when in use vAs shown, l the' housing comprises the top andjbottom walls,l 2 andv r3 respectively, side walls 4,*a'rear' orpackv` end wall 5,;iand a removable frontwall 6; The

secured to the, housing in any suitable v4manner;

engage in; suitableslotsfin the edgesof the head (i` to -receive the securing nuts Swwhich `l.bear

againstfthehead and forcethe same toward the adjacent edges-of the supporting walls.A`suit-; i `able` gasket Ijisinterposed between vtheaheadli and fthe edges :of `the* adjacent walls to flui'dtightjoint or connection: i f Thetop walll 2-,i`s providedl'with .an inlet nipple kI I `to'which is attached a fluid conducting pipe v 1 I2 which. carriesthe/cleaning, fluid intoithe` top ofthelter` unit while the bottom wall 3' isprovided Ywith a similar nipple! I3 to'which` is con-,-

nectedaffluid-returnorcarry oifpipe I4.; f

ari-.Disposed horizontally, within'the housing; bre-fvv f tween-the, sidewalls '4'fisnafremovable"filtering ,i

unit-winch is indicated'jgenerally-by the numeral I5 andwhich is ysecured ,-at .its opposite 'sides to theside walls 'but isv spaced from 'the' 4topj an bottom walls; as is clearly shownqn 3;

or `plaits `being theA same except for theI outer,- most ones each of which is extended at thefree edge thereof beyond the top of the unitto form the upwardly extending ylongitudinal topwingsv I8. The plaits thus formed to extend Llongitudinaily of the sheet metal body of thenlter unit# provides, when the body isdis'posedwith outer sideuor bordering plaits in opposedrelation with :the sidewalls, the substantiallyyshaped'.spacesA I9 which open upwardly "and which alternate` f with correspondinglyformed yspaces 20 `which open downwardly.

Disposedover the top surface ofithe perforated particularly `to the draw-Vvvr n ing the numeral4 I generally ldesi'gnatesithe housingfor therjpresent lter, thesame `Abeingfshown .f

formI a j adjacent jaws 23"by the toggle links 21.

theshaitlwhenrotated will feed half of l the nuts winronedirectionand the other halfin the opposheet metal body which forms the frame Work of the ltering unit, is a covering of suitable fabric 2I which lies in and takes the form of theY V kspaces I 9 and which is extended upwardly and over the extended side portions I8 in the manner illustrated in Fig. 3. Thus the cleaning iiuidl and cleaning powder which is Vintroduced into the `lter by Way ofthe pipe I2 will collect in the spaces I 9 upon the inclined opposing walls of the fabric and form --av ltercake through which the fluid Will pass; j

,Between the outer sides of the extended porj j tions I8 and the adjacent side walls are placedt j packing or gasket strips 22 which, when the here inafter described clamp is placed in`r positionl establish a leaktight joint betweenfthe sides'oi the filter and the side walls ofthe housing. L n n W The `clamp by which the-filter unit isYmain-f.

tainedn position in the housing comprisesthe 1.

two spaced parallel jawy bars 23 between whicham lis in parallel relation therewith the. f ysere'w or v threadedshaft24; one-half of whichJi's provided withtscrew threads of oneriiandi` while the opposite half is provided Vwith screw threads :of the opposite hand. l'rlie end of this threaded shaft nearestthe heads isfs'quared orotn'erwisesuitvablyiormedas,indicated at. 25 to `facilitate the y attachment of awrenchV or. other suitable implement-`l thereto' 'fori effecting the turningcof-.tm Y

shaft.` .f

Upon the shaft is threaded a serie'sof nt's 26 and thesev nuts are""pivotally coupled withlthe Since site! direction it will be readily seen` that the toggle links will be extended l or retracted yto, separate or draw together! thejaw bars 23.' Thisclamp unit is I disposed longitudinally in the gcasingbetween the'extended upper portions I8" of.' theiilterA` unit and lwhen,tneljaws are separated they function to force-the sid'esiof tiielter unit against the gasket 23 to compress the'latt'er against the adjacentside walls thus le'stablishixig ythe previously referred to leaktight jointlbetween the top part of,l the filter unitand the casingwalls Y l'lhe height of theffllter'unit ismaterially less than the interior height of the 'casing and when rthe'iilter unitis `-placed in' the casingit is located with'r tlie'b'o'ttomf portion thereof 'spaced frorn f the bottomwall 31o`f the casing andwith the top Portiorilspaci'ed a slightly `greater distance from i the topf: wall 2J ysoasto-fallow forv the insertion of'jthe clampV unit. Thus it will be seen that ample space is provided above and'belowthelter unit forthe reecirculation of` thecleaning liquid intoand 'i \3:^ A filter comprising aca'sing. having opposite f against the adjacent front and rear walls of the casing to prevent the passage of the lter powder across the ends of the plaits of the unit.

Fromthe foregoing it will be readilyapparent.

that the filtering device of the present invention not only provides a unit in which the fabric walls areso disposed as to maintain the layers of ltering powder intact when the ow of cleaning'iiuid i is interrupted butwhich is so designed as tolgive a maximum filteringfarea ina minimumof space;

` It will, of-cour'se, be r'ea'dily"apparenty that the filtering. device can be built in different sizesfand that the accordion-like or plaited ltering screen or unit Vcan bereadily adaptedto `casings of different sizes and that the number' of plaits or folds in the units can be increased or decreased as desired to varyjjrthe effective areak of ltering' surface; t i

`What is claimed is: A y Y v1. A fluid lter comprising an elongated casing having-topg'bottom and-*side walls an'df'ront and f rear-f walls; said front: wall bein'gremovablefa fluid Ainletvrr'lelar'is op'enngftllrough the top wail, i ia fluid outletl means openingtthroughthe `bottcim l wall, and a filtering unit extending throughout the length ofthe c'asigandidisposedlwithin the top and .bottomwalls said unit comprisingaisheet lofl forar'ninous materialfoldedto provide a plurality of plaitsfandffan expanslb'le means `lying' between and se'curin'gvthe-free l'origitudina'l 'edges of the opposite pi'aitslzfofivv the sheet t'ofi rrn'ateriai against theiriner sides 'of the'sidewall.

"2l yA niterofthe character set-forth in ciaii in which the said. opposite plaits''havetlieir f re'e longitudinal 1 edges. eXtended:abovey the intermeddiate plaits, andsaid' securing means comprises a' clamp disposedz above the'zlsheti and'fhavlng coupled 4outwardly!pressed jaws `engaging! and pressing the 'extended portions ovfthputermfo'st plaitsllag'ainst the adjacent side' wall'ss top and-'bottom'in'let'andfoutlet'openings, afllt'ers ing unit; disposed acrossthe .interiorofl the I'casing betweenthe inlet and outlet openings f and 'dividing' the casing into Luppe'rf and lowerchambers with which said openings .l respectivelyV 'communie cate said rfilter unit-fcomprising a '.plur'al'ityr-ol joined .V-sectionsinparallelrelatiomthe bmder-r ing sections having outer; free-edges disposed abovefthe` horizontaltplane-ofithe topVK edges oflthe other sectionsa` gasket elementinterposedabetween cachot said free edges and anadjacent wall), and clamping fme'ans for, securing saidfree edges and gasketsfagains't the adjacent side Walls comprising a pairof jawseachlyin'g against' the inner side of one ofsaid" free edges, a screw vbei tween and paralleling said jaws, nuts threadedv on said'screwjandtoggle arms pivotally coupling thenuts with the jaws. l j

GEORGE D. '1i/looks." 

